The Black Bloc (Arabic: الكتلة السوداء‎) was a political organization in colonial Sudan, seeking to defend the interests of Black Sudanese.^[1] The Black Bloc emerged in 1948.^[2] It was based in the Nuba Mountains.^[3] The Black Bloc faced resistance from other Sudanese political parties, who labelled it as a 'racist' organisation. The British colonial authorities caved in to the pressure from these groups, and denied the Black Bloc the ability to register itself as a political party.^[4]